Availability is one of our major problems when it comes to health and obesity. In paleolithic times we were programed to seek out carbohydrates and sugar. It was not readily available and it was hard to find. When we found them, lets say a starchy tuber, it took time and energy to dig it up. This would give us a good workout.
Now days, just walk into a supermarket, and get as much as you want. No effort. No limits. This combined with our hardwiring to like sweets is making us fat. Sometimes I believe it’s not all of our fault we are obese.